/**
  ******************************************************************************
  * @file    IAP/IAP_Main/Src/common.c
  * @author  MCD Application Team
  * @brief   This file provides all the common functions.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */

/** @addtogroup STM32F4xx_IAP_Main
  * @{
  */

/* Includes ------------------------------------------------------------------*/
#include "common.h"
#include "usart.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Convert an Integer to a string
  * @param  p_str: The string output pointer
  * @param  intnum: The integer to be converted
  * @retval None
  */
void Int2Str(uint8_t *p_str, uint32_t intnum)
{
    uint32_t i, divider = 1000000000, pos = 0, status = 0;

    for (i = 0; i < 10; i++)
    {
        p_str[pos++] = (intnum / divider) + 48;

        intnum = intnum % divider;
        divider /= 10;
        if ((p_str[pos-1] == '0') & (status == 0))
        {
            pos = 0;
        }
        else
        {
            status++;
        }
    }
}

/**
  * @brief  Convert a string to an integer
  * @param  p_inputstr: The string to be converted
  * @param  p_intnum: The integer value
  * @retval 1: Correct
  *         0: Error
  */
uint32_t Str2Int(uint8_t *p_inputstr, uint32_t *p_intnum)
{
    uint32_t i = 0, res = 0;
    uint32_t val = 0;

    if ((p_inputstr[0] == '0') && ((p_inputstr[1] == 'x') || (p_inputstr[1] == 'X')))
    {
        i = 2;
        while ( ( i < 11 ) && ( p_inputstr[i] != '\0' ) )
        {
            if (ISVALIDHEX(p_inputstr[i]))
            {
                val = (val << 4) + CONVERTHEX(p_inputstr[i]);
            }
            else
            {
                /* Return 0, Invalid input */
                res = 0;
                break;
            }
            i++;
        }

        /* valid result */
        if (p_inputstr[i] == '\0')
        {
            *p_intnum = val;
            res = 1;
        }
    }
    else /* max 10-digit decimal input */
    {
        while ( ( i < 11 ) && ( res != 1 ) )
        {
            if (p_inputstr[i] == '\0')
            {
                *p_intnum = val;
                /* return 1 */
                res = 1;
            }
            else if (((p_inputstr[i] == 'k') || (p_inputstr[i] == 'K')) && (i > 0))
            {
                val = val << 10;
                *p_intnum = val;
                res = 1;
            }
            else if (((p_inputstr[i] == 'm') || (p_inputstr[i] == 'M')) && (i > 0))
            {
                val = val << 20;
                *p_intnum = val;
                res = 1;
            }
            else if (ISVALIDDEC(p_inputstr[i]))
            {
                val = val * 10 + CONVERTDEC(p_inputstr[i]);
            }
            else
            {
                /* return 0, Invalid input */
                res = 0;
                break;
            }
            i++;
        }
    }

    return res;
}

/**
  * @brief  Print a string on the HyperTerminal
  * @param  p_string: The string to be printed
  * @retval None
  */
void Serial_PutString(uint8_t *p_string)
{
    uint16_t length = 0;

    while (p_string[length] != '\0')
    {
        length++;
    }
    HAL_UART_Transmit(USART1, p_string, length, TX_TIMEOUT);
}

/**
  * @brief  Transmit a byte to the HyperTerminal
  * @param  param The byte to be sent
  * @retval HAL_StatusTypeDef HAL_OK if OK
  */
HAL_StatusTypeDef Serial_PutByte( uint8_t param )
{
    HAL_UART_Transmit(USART1, &param, 1, TX_TIMEOUT);
}
/**
  * @}
  */
